Fema Electronica B Series, Руководство пользователя, Страница: 13 / 28

FEMA ELECTRÓNICA . SERIES B . Models Bxx-T
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To configure the alarm, access the alarm menu (‘ ALr1 ’,
‘ ALr2 ’ or ‘ ALr3 ’) and configure the following parameters :
• at the ‘ Active ’ (‘ Act ’) parameter select ‘ on ’
• at the ‘
Type of alarm
’ (‘
TypE
’) parameter select ‘
MAX
’
for maximum alarm (activates when reading is higher
than setpoint), or ‘ MIn ’ for minimum alarm (activates
when reading is lower than setpoint).
• at the ‘
Setpoint ’ (‘ SEt ’) parameter configure the alarm
activation point. Parameter value is accessible through
‘fast access’ (see section 1.13.6).
• at the ‘ Hysteresis ’ (‘ hySt ’) parameter select the hys -
teresis value. Hysteresis applies to the alarm deactiva -
tion. Alarm deactivates once the reading is beyond the
setpoint plus the hysteresis value. Hysteresis prevents
relay switching in case of signal fluctuations close to the
setpoint value.
• at the ‘
Activation delay ’ (‘ dEL.0 ’) parameter configure
the delay to apply before the alarm is activated. Delay
starts to count once the setpoint is reached. Value from
0.0 to 99.9 seconds.
• at the ‘
Deactivation delay ’ (‘ dEL.1 ’) parameter config -
ure the delay to apply before the alarm is deactivated.
Delay starts to count once the setpoint is reached plus
the hysteresis value. Value from 0.0 to 99.9 seconds.
• to work with ‘windowed alarms’
(see Figure 9) activate
‘ Setpoint 2 ’ (‘ SEt2 ’) to ‘ on ’ and then configure the de -
sired second setpoint value. Second setpoint must al -
ways be higher in value than the first setpoint.
• at the ‘
Inverted relay ’ (‘ r.Inv ’) parameter select ‘ on ’ to
invert the activation logic of the relay. Relay is inactive
when alarm is active, and relay is active when alarm is
inactive.
• at the ‘
Locked alarm ’ (‘ A.Lck ’) parameter select ‘ on ’ to
block the automatic alarm deactivation. Alarm deactiva -
tion must be performed manually, by pressing the ‘LE’
front button
(see section 1.13.8)
.
1.13.4 Alarms configuration menu
Alarm 1
Setpoint
Hysteresis
Setpoint 2
Active
Type of alarm
Alarms
Activation
delay
Deactivation
delay
Inverted relay
Locked alarm